323results about How to "Not easy to cause pollution" patented technology

The invention relates to a method for modifying the surface of carbon fiber coated with nano sol through plasma treatment, which comprises the following steps: firstly, nano particles are prepared into an organic solvent, a sol solution of water or a sol solution prepared by hybridization reaction of a precursor solution of organic-inorganic nano particles by the ultrasonic vibrating technology; secondly, the sol solution is coated on the surface of the carbon fiber, treated by means of spray coating and padding, and dried; and thirdly, the dried carbon fiber is placed on a special transport unit for plasma processing equipment and a plasma is sprayed on the surface of the carbon fiber to make the carbon fiber move in the plasma atmosphere, so as to generate surface modification, wherein the treating power is between 10 and , watts, and the treatment time is between 0.5 and 300 seconds. The method can effectively improve the performance of the fiber, improves the molded manufacturability and the overall properties of composite materials of the fiber, has simple technology, quick processing speed, good treatment effect and low cost, is convenient to operate and difficult to cause environmental pollution, can reduce energy consumption, and is suitable for industrial production.

The invention discloses a surface modification method for a polytetrafluoroethylene product. The method comprises the following steps of: coating polyethylene glycol on the surface of the polytetrafluoroethylene product, and then performing surface modification on the polytetrafluoroethylene product coated with the polyethylene glycol by adopting a plasma treatment method. Compared with the prior art, the polyethylene glycol element is introduced on the surface of the polytetrafluoroethylene product so as to effectively improve the surface activity of the polytetrafluoroethylene product, reduce the contact angle, improve the surface energy, remarkably improve the wetting property and the adhesion property of the polytetrafluoroethylene product and keep the polytetrafluoroethylene product for long time; and in addition, the method has little influence on the chemical property of the polytetrafluoroethylene product, has the advantages of convenient for operation, simple process, high processing speed, good treatment effect, low cost, energy conservation and emission reduction, is not easy to cause environmental pollution, and is more suitable for industrialized production.

The invention discloses a method for preparing an organic ternary polycarboxylic acid dustless antirust additive 2,4,6-tri(amino caproyl)-1,3,5-triazine by adopting a one-pot method, which comprises the following steps of: ring-opening caprolactam with alkali to generate carboxylate of aminocaproic acid first; then performing a substitution reaction by the carboxylate of aminocaproic acid and cyanuric chloride; and finally, acidizing with hydrochloric acid to prepare derivatives of organic ternary polycarboxylic acid. The preparation method is free from a toxic organic solvent and employs common water as a solvent for reaction. The preparation method ha the advantages of simple process operation, low production cost and low environmental pollution and is more suitable for large scale industrial production.

The invention relates to a method for modifying a nanometer sol ultrahigh molecular weight polyethylene fiber by plasma treatment. The method comprises that: (1) inorganic nanometer particle is prepared into a sol solution by an ultrasonic shock technique; or (2) a precursor solution of the organic-inorganic nanometer particle is subjected to hybridization reaction with the inorganic nanometer particle to prepare the sol solution; (3) the sol solution is coated on the surface of the ultrahigh molecular weight polyethylene fiber; and (4) the ultrahigh molecular weight polyethylene fiber is dried at a temperature of 10 and 150 DEG C, and the solvent is collected; the ultrahigh molecular weight polyethylene fiber is introduced in a plasma atmosphere region by a plasma generator for plasma surface modification; and the treated ultrahigh molecular weight polyethylene fiber is on-line rolled by an automatic rolling machine. The compound property between the treated ultrahigh molecular weight polyethylene fiber and the organic matrix materials is greatly improved; moreover, the method also has the advantages of simple process, good treatment effect, low cost, environmental protection and low energy consumption.

The invention discloses a production method for extracting tryptophan from fermentation liquor by one-step refining, which comprises the pretreatment of the fermentation liquor. In the method, mycoprotein is filtered off by using a ceramic microfiltration membrane, is decolorized by using an ultrafiltration membrane and is desalted and concentrated by using a nanofiltration membrane; the nanofiltration membrane concentrated liquor is directly decolorized by using activated carbon, the decolorized liquor is subjected to isoelectric point crystallization at a low temperature, and a qualified competitive product is obtained by rinsing with ice water during centrifugal separation; the crystallization mother liquor returns to the nanofiltration membrane for circulation; protein feed with high additional value is prepared by mixing, drying and crushing the ultrafiltration strong liquor and mycoprotein; and nanofiltration strong brine can be used as a culture medium for later use or sold serving as a base fertilizer. The method has the advantages of avoiding adding an organic solvent and an inorganic solvent in the preparation process of a crude product and a fine product, saving the solvent recovery cost, solving the problems of sewage treatment and environmental pollution, along with high utilization rate of the mother liquor, high product quality, and more contribution to industrial production, wherein the total extraction yield of L-tryptophan is 83.5 percent in a 500-ton production line.

The invention relates to a method for modifying Kevlar fiber by treating a nano sol through plasma, which comprises the following steps: (1) preparing inorganic nano particles into sol solution by ultrasonic oscillation technology; or (2) carrying out a hybridization reaction of precursor solution of organic-inorganic nano particles and the inorganic nano particles to prepare sol solution; (3) coating the sol solution on the surface of the Kevlar fiber; (4) drying the Kevlar fiber at a temperature of between 10 and 150 DEG C, collecting solvent, then introducing the Kevlar fiber in a plasma atmosphere area through a plasma generating device for surface modification treatment by the plasma; and finally, carrying out on-line winding of the treated Kevlar fiber in an automatic winding machine and adjusting the wiring speed of the Kevlar fiber by adjusting the speed range of a winding shaft. The combined performance between the Kevlar fiber treated by the method and the organic base materials is improved greatly; and the method has simple process, good treatment effect, low cost, difficult environmental pollution and reduction of the energy consumption.

The invention provides a telomere length detection method based on fluorescent quantitative PCR. The method comprises the following steps of: extracting genome DNA (deoxyribonucleic acid); carrying out fluorescent quantitative PCR detection, detecting telomere repetitive sequence by using primers SEQ ID NO.1 and SEQ ID NO.2, and detecting 36B4 gene sequence of human acidic ribosomal phosphor-protein PO by using primers SEQ ID NO.3 and SEQ ID NO.4; calculating a relative telomere length T/S; and further calculating the absolute length of the telomere according to the derived formula. In the formula, Eva Green is used as dye, the telomere primers and internal control primers are used for detecting the telomere length by using the fluorescent quantitative PCR method, and the conversion relation between telomere TRF length and the T/S ratio is derived based on the equation of linear regression of large sample analysis, and therefore the telomere length detection method which is suitable for clinic is provided.

The invention relates to a method for detecting human beta-globin gene mutation, in particular to a method for detecting the beta-globin gene mutation by a modified molecular beacon melting curve. The method comprises the following steps of: designing and preparing a corresponding modified molecular beacon in region of a beta-globin gene needing mutation detection; designing an upstream primer and a downstream primer on the periphery of the designed modified molecule beacon, and performing PCR amplification on fragments containing the region to be detected by using the upstream primer and the downstream primer; and after PCR amplification is finished, analyzing the melting curve, and judging whether a nucleotide sequence to be detected has the gene mutation and possible mutation types according to the change of the melting point of the modified molecular beacon.

The invention relates to a method for detecting deletion mutation of a nucleic acid molecule, and particularly relates to a method for detecting deletion mutation of a nucleic acid molecule through a probe melting curve, and a reaction system and kit for detecting deletion mutation of a nucleic acid molecule. The method provided by the invention is accurate and stable, rapid, simple and convenient, free of PCR after-treatment and capable of overcoming defects that the operation is complex, long time is consumed, pollution is easily caused, the detecting flux cannot meet the conventional demand and the like in the prior art, so that the method has a favorable application prospect.

The invention relates to a one-tube magnetic bead method for extraction of virus nucleic acid for fluorescent quantitative detection, which belongs to the technical field of biological nucleic acid application and includes: firstly, preparing lysis solution, adding the lysis solution and magnetic beads into a tube strip, adding a sample of virus nucleic acid into the tube strip, and mixing well to lead the magnetic beads to fully absorb the virus nucleic acid; secondly, placing magnetic bead mixed liquor on a magnetic carrier, and allowing the liquor to stand for seconds to separate the magnetic beads and solution; and thirdly, rinsing for protein removal and desalination, and drying in air at room temperature. The method is simple and quick, less apt to cause pollution and high in flexibility. By the method, extracting efficiency is high, nucleic acid purity is high, testing repeatability is good, compatibility to amplification reagents is high, production cost is reduced, operation accuracy is improved, and works such as clinical diagnosis, medicolegal identification and the like are facilitated greatly.

The invention provides a high efficiency and low foam environment-friendly type scouring agent and a preparation method thereof, wherein the scouring agent comprises: 15-25% by weight of dodecyl diphenyl ether sodium disulfonate, 5-15% by weight of C12-16 seconary Alkane Sulphonate Sodium, 15-25% by weight of alkyl polyglucoside, 10-150% by weight of isomeric alcohol ethoxylates, and the balance being water. The concrete steps for preparing the scouring agent, comprising: adding water into a mixture of dodecyl diphenyl ether sodium disulfonate and C12-16 seconary Alkane Sulphonate Sodium, and then mixing the mixture for dissolving; and (2) adding alkyl polyglucoside and isomeric alcohol ethoxylates into the mixture obtained in the step (1), and then uniformly mixing. The product is used as a green environmental protection printing and dyeing auxiliary agent with the advantages of simple technology, environment-friendly formula and excellent performances.

The invention belongs to the technical field of nanometer porous materials, and particularly relates to a gas separation functional material, and a preparation method and application thereof. The functional material comprises aqueous inorganic nanoparticles, monodisperse aqueous polymer microspheres and a nonessential auxiliary agent, wherein functional modification groups capable of being combined with gas molecules are modified on the surfaces of the polymer microspheres or (and) the inorganic nanoparticles; a polymer/inorganic nanoparticle composite emulsion with adsorbable gas functional modification groups can be obtained by adopting an in situ polymerization method or a blending method; and after the moisture is volatilized, the polymer and the inorganic nanoparticles are self-assembled to form the gas separation functional material with a nanometer porous structure. The method and the application realize identification, adsorption and adsorption-desorption adjustment of the nanometer porous structure to gas molecules if CO2, H2S, SO2, HCl, Cl2, NO2, H2O, NH3 and the like by regulating and controlling the types of the polymer or (and) the inorganic nanoparticles, the particle diameters and the bore diameters of the functional modification groups, the microspheres and the inorganic nanoparticles on the surface, and the like.

The invention relates to low-abundance gene mutation detection. Particularly, the invention provides a method for detecting whether mutation exists in the nucleic acid molecules of a nucleic acid sample to be detected through self-quenching probe melting curve analysis. Besides, the invention also provides a kit comprising a self-quenching probe and primer pairs, and the kit can be applied to implementing the method.

The invention discloses a load-type nano zero-valence iron particle and a preparation method therefor. The iron particle takes modified sepiolite as a carrier, and the surface and interior of the modified sepiolite are respectively provided with nano zero-valence iron particles. The preparation method comprises four steps: the preparation of the modified sepiolite; the preparation of modified sepiolite solution containing iron ions; the preparation of nano zero-valence iron solution; and the preparation of the load-type nano zero-valence iron particle. The obtained load-type nano zero-valence iron particle is better in dispersity and reactivity. The preparation method is simple in technology, is convenient to operate, and is simple in needed equipment.

The present invention relates to the deposition dewatering process of floated tail ore, and is especially the deposition dewatering process of floated tail ore of diaspore type alumyte. The present invention features that into the floated tail ore slurry, sulfuric acid or sulfate, aluminum sulfate, ferrous sulfate, zinc sulfate, copper sulfate, barium sulfate or alum in acidity after hydrolysis is first added to regulate pH value to 6.5-7.5; and polyacrylamide as organic flocculant in the amount of 0.001-0.01 % of the dry tail ore slurry weight is then added for flocculation and deposition. The present invention can raise the concentration of tail ore slurry from 6-11 % to over 25 %, reduce the overflow floated matter to below 1 g/L and make the overflow water capable of being reused.

The invention relates to a yaw speed reducer of a wind power generator. Four-stage satellite transmission structures are arranged in a box and are connected with each other to be transmitted to an output gear shaft in sequence; a motor flange is connected to the upper end of the box; the output gear shaft is arranged in a support body through an upper bearing and a lower bearing and is sealed by an oil seal base; a first-stage internal gear ring is connected into the motor flange through bolts; a motor input connection sleeve is arranged in the motor flange through a bearing; the number of theinternal teeth of the motor input connection sleeve is the same as the number of the external teeth of a first-stage sun gear; and the internal teeth of the motor input connection sleeve and the external teeth of the first-stage sun gear have the same modulus and the same pressure angle of 20 degrees and are in mutual meshing transmission. The yaw speed reducer has compact structure, reasonable design, good uniform-loading effect, strong bearing and impact resistance capacity, good sealing performance and a uniformly-forced satellite gear meshed with the floating sun gear, is convenient to make and not easy to cause the environmental pollution and runs stably, thereby meeting the requirements of the clients.

The invention discloses a polypropylene nylon-plastic alloy for asphalt packaging bags, which comprises the following ingredients (by weight portions): polypropylene 80-95, nylon 5-20, auxiliary agent 0.1-1, and compatibilzer 5-20.

The invention discloses an air tightness detection system, which relates to the technical field of bellows air tightness detection. The airtightness detection system includes an airtightness detection platform, an inflation module, a pressure detection module, a processor, a comparison module, and a terminal. In this solution, the bellows is filled with gas to form a certain pressure in the bellows, and then the pressure change in the bellows is measured by the sensor after the inflation is stopped to determine whether the bellows is leaking. And a change value ΔP is preset by the system, so that products exceeding ΔP are automatically judged as unqualified products. The bellows will not be polluted during the detection process, and the detection process has a higher degree of automation, which saves manpower input and speeds up the detection speed.

The invention discloses a manufacturing technology for an artificial stone closestool, which comprises the steps as follows: a closestool seat glass reinforced plastic die, an inner container glass reinforced plastic die and a base wooden die are manufactured according to the shapes and sizes of a closestool seat, an inner container and a base, and an artificial stone closestool seat, an artificial stone inner container and a PVC (polyvinyl chloride) base are manufactured according to the dies; a seat ring of the closestool seat and the inner container are connected in a casting manner, and the closestool seat is communicated with a waterway of a water tank and is communicated with the inner container; the base is connected with the closestool seat and then a sewage conduit is communicated with a blowdown hole of the inner container, then a lower opening of the base is sealed up through a PVC plate, and the sewage conduit is led to penetrate through the PVC plate at the bottom of the base; in addition, a water tank cover board is assembled on the water tank after a flushing component is assembled in the water tank of the closestool seat, and then a seat ring cover board of the closestool seat is hinged with the seat ring. Through the adoption of the closestool that is manufactured through the manufacturing technology, energy consumption is low and the emission of waste gas and waste water is small during the manufacturing process, and the manufactured closestool can be recycled.